Ring fan



FIG. 1 is a front perspective view of a ring fan showing my new design.

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a left side elevation view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a partial section view thereof, taken along line 9-9 of FIG. 4.

The portions of the ring fan shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a ring fan, as shown and described. 